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(No Model.) 3 Sheets-Sheet 1. L. BARROW & O. H. GUEST. VELOOIPEDEPatented Apr. 8, 1890.

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(No Model.) 3 Sheets-Sheet 2.

L. BARROW 8: 0. H. GUEST. VELOGIPEDE.

No 425,017. Patented Apr. 8, 1890.-

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BY 'r'r-n-zua A-F'T'DRNEY 3 SheetsFSheet 3. L. BARROW & G. H. GUEST.

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VEL'OGIPBDE.

Patented Apr. 8, 1890.

INVENTDRE WITNESSES BY 'f'l-IElPl AT'TUHNEY 1v NITED STATES PATENTQFFICE.

LOUIS RARRow AND CHARLES HENRY GUEST, or BIRMINGHAM, COUNTY or WARWICK,ENGLAND.

VELOCIPEDE.

SPECIFICATION forming part of Letters Patent No. 425,017, dated April 8,1890.

Application filed December 3, 1889.

To aZZ whom it may concern:

Be it known that we, LOUIS BARROW an CHARLES HENRY GUEST, subjects ofthe Queen of Great Britain, residing at Birmingham, in the county ofVarwick, England, have invented a new and useful Improvement inVelocipedes, (for which we have obtained a patent in Great Britain, No.11,421, bearing date July 16, 1885),) of which the following is aspecification.

Our invention relates to improvements in the frames of those velocipedeshaving two wheels, one in front of the other, the front one beingoperated to steer and the rear one to drive the machine, (commonly knownas ,rear-driving Safety bicycles;) and it consists in forming that partof the frame carry-- ing the driving-wheel, pedal crank-axle, and seatfor the rider of iron or steel bars of a crescent or other suitablesection, and in bolting or riveting the several parts together.

The objects of our improvements are, first, to provide a frame whichcan-be constructed without skilled labor 5 secondly, to provide a strongand rigid frame out of bar iron or steel or itsequivalent, and, thirdly,to reduce the cost of manufacture. We attain these ends in the mannerillustrated in the accompanying drawings, in which- Figure 1, Sheet No.l, is a view in side elevation of a rear-driving Safety bicycle, theframe of which is constructed according to our invention. Fig. 2, SheetNo. 2, is a view in sectional elevation, on an enlarged scale, of ourimproved frame. Fig. 3, Sheet No. 3, is a view in sectional plan, on anenlarged scale, on line 00 00, Fig. 2, Sheet No. 2; and Fig. 4, SheetNo. 3, is a view in front elevation, on an enlarged scale, of the frame.

Throughout the several views similar parts are marked with like lettersof reference.

The frame carrying the driving wheel, pedal crank-axle, and seat for therider consists of thirteen members, formed of lengths of bar iron orsteel of a crescent or other suitable section, numbered in the drawings1 to 13, inclusive, of a center spindle 14, forming part of the steeringjoint or head, a socket 15 for the seat-pillar, and a cross-bar 16,carrying the bearings for the pedal crank-axle.

Serial No. 332,477. (No model.) Patented in England July 16,1889,No.11,421.

These form the essential parts of our improved frame. The part of theframe carrying the steering-wheel presents no novel features and may beof the well-known type.

The several parts of the frame are arranged and connected together inthe following manner: The cross-bar 16 is preferably formed of increaseddiameter at or about the center of its length to receive a swingingbracket 17, carrying the bearings 18 for the pedal crankaxle. Onto thereduced ends of the cross-bar are placed the ends of nine of the membersof the frameone on each side thereof, and preferably in the followingorder: members 1 and 2 forming the horizontal fork carrying thedriving-wheel, 3 and 4 running vertically to support the seat-pillarsocket 15, 5 and 6 running to the top of the center spindle 14,

7 and 8 running to the bottom of the center spindle 14, and member 9running to the axle of the driving-wheel, forming an additional prong orstay on the opposite side of the horizontal fork to that on which thechain-gearing is placed. In order to splay out the additional prong orstay 9, a washer 19 is placed 7 5 on the cross-bar between it and theother members. The ends of these members are then locked firmly onto thecross-bar by means of nuts threaded on its ends. The free ends of themembers 7 and S are fixed to the lower end of the center spindle 14 by atransverse bolt and nut 20. The free ends of the members 5 and 6 arefixed to the top of the center spindle 14, together with two othermembers 10 and 11, by a transverse bolt and nut 21. The free ends of themembers 10 and 11 and 3 and 4 are fixed to the socket 15, together withthe ends of two other members 12 and 13, by a transverse bolt and nut22. The free ends of the members 12 13 are adapted, with those of themembers 1, 2, and

9, to receive the axle 23 of the driving-wheel and be locked thereto bythe nuts on the ends thereof. Instead of the bolts and nuts 20, 21, and22, rivets maybe used, if desired. 5 The members 3 and 4, 5 and 6, 7 and8, and

12 and 13 converge at their points of connection to the center spindle14 and seat-pillar 15, respectively, and they are widest apart at theirpoints of connectionwith the crossbar 10o 16 and axle 23 of thedrivingwlieel, respectively. The members 12 and 0 also converge slightlyat their points of connection to the cross-bar 16; but the members and12 run parallel to one another as close together as possible. The centerspindle 11 and the socket are provided with suitable lugs, asillustrated, adapted to project between the respective members fixedthereto to stilfen the frame.

It will be seen that as all the members of the frame are bolted orriveted together and not brazed the members 5 and 6 are necessary to thestability thereof, and act as stays to the respective parts of theframe, and also that the member 9 acts as a truss to the fork 1 2, andso stiffens it against the pull of the driving-chain.

To prepare the ends of the several members to be bolted up or riveted tothe respective parts hereinbefore set forth, they are stamped or pressedout flat, and a hole of the required size is punched or drilled therein.

The mud-guard 21 presents no novel features, and may be fixed to themembers 1 and 12 and 13, as illustrated, or in any other convenient andsuitable manner.

The mechanism we prefer to use to adjust the driving-chain consists of atension-rod 2G, screwed or otherwise fixed to thelower lug on the centerspindle 14-, and adapted to pass through an eye orarm on the swingingbracket 18, carrying the bearings for the pedal crankaxle, and becapable of rocking the swinging bracket on the crossbar-16 by means ofsuitable nuts threaded on the end thereof. The swinging bracket islocked to the cross-bar 1.0 after adjustment by the set-screw 25. Thisdevice forms no part of our invention, as any other equivalent orsuitable mechanism may be used. These other parts of the machine towhich no specific reference has been made and which are not illustratedin the drawin present no novel features, and may be of the usual typeand construction.

\Ve wish it to be understood that we do not limit ourselves to the useof bar iron or steel of a crescent section for the members of ourimproved frame,as bars of any other section, or even tubes of aflattened section, may be used; and also that we do not limit ourselvesto the precise shape or the exact details of locipcde, of the fork l 2,for carrying the driv" ing-wheel, and the additional prong or stay 9,adapted to truss the said fork, as set forth.

2. In the frame of a velocipede, the combination, with the members 1 2 47 8 1O 11 12 13, the center spindle 14, the seat-pillar socket 15, andthe cross-bar 16, bolted or riveted together by transverse bolts 0rrivets, of the members 5 and 6, acting as braces to the said frame andpreventingmovement at the joints, as set forth.

3. In a frame for a velocipede, the combination of the fork 1 2, withadditional prong or stay 9, and the fork 12 13, carrying thedriving-wheel, the vertical members 3 4, the members 7 S, the members 1011, the center spindle 11-, the seat-pillar socket 15, the crossbar 16,and the diagonal brace 5 6, all combined, arranged, and operating as andforthe purpose set forth.

In witness whereof we have hereunto signed our names in the presence oftwo subscribing witnesses.

LOUIS BARROXV. CHARLES HENRY GUEST.

\Vitncsses:

THOMAS MARSTON, SIDNEY (J. TAUNTON.

